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Toshiba Microwave Troubleshooting
Toshiba Microwave Troubleshooting

Toshiba Microwave Troubleshooting

If you're looking for help fixing your Toshiba Microwave, look no further! Our comprehensive Toshiba Microwave Troubleshooting guide will explain common issues, provide tips, and show you how to read your model's error codes.

Toshiba Microwave not heating 
The diode converts the A/C power output of the transformer to D/C, doubling the voltage to nearly 5,000 volts. This high voltage powers the magnetron to heat the food. If the diode burns out, the magnetron won’t receive enough voltage to operate, preventing the microwave from heating. When the diode fails, it is often visibly burned out. Inspect the diode and if the diode is burned out, replace it. If inspecting the diode proves inconclusive, test it with a multimeter that uses a 9-volt battery or put a 9-volt battery in series with the diode. When the leads are reversed, the diode should only have continuity in one direction. (Warning: The microwave oven can store a lethal amount of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the high running voltage and the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the diode.) 

Toshiba Microwave light bulb not working 
The light bulb itself might be burned out. Replace the light bulb before replacing any of the parts associated with the light bulb. Before replacing the control, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the control board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the control board is not sending enough voltage to the light bulb socket, replace the control board. Before replacing the light socket, replace the light bulb. If you replace the light bulb, and the light still doesn’t work, use a multimeter to test the light socket for continuity. If the light socket does not have continuity, replace it. If the microwave runs for a few seconds and stops the touchpad might be at fault. This is not common. Generally speaking, if the microwave display is working and some of the buttons respond correctly but some don’t, the problem is with the touchpad. 

Toshiba Microwave shuts off after a few seconds 
A door switch might be failing intermittently. Check each of the door switches for signs of overheating, arcing, or burning. If you don’t see any obvious signs of failure, use a multimeter to test each switch for continuity. If any of the switches is visibly damaged or only has intermittent continuity, replace it. Control boards are often misdiagnosed—before replacing the control board, first check more commonly defective parts, particularly the door switches. If all of the other components are working properly, replace the control board. 

Toshiba Microwave turntable not turning 
Use a multimeter to test the motor for continuity. If the turntable motor does not have continuity, replace it. 
If the microwave turntable is not turning the glass tray drive coupling could be broken or stripped out. Gently pull the coupling off the drive motor shaft to inspect the drive coupling for damage. 
If the microwave turntable is not turning the glass tray support could be broken or stripped out. Gently pull the support off the drive motor shaft to inspect the tray support for damage. 

Toshiba Microwave buttons not working 
To determine if the touchpad is defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad. 
To determine if the touchpad and control panel are defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad and control panel. 
To determine if the control and display board is defective, try pressing each of the buttons on the control panel. If none of the buttons are responding correctly, replace the user control and display board. 



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Product Reviews:

The size is great. Noise is a lot less than my last one. The controls are r
The size is great. Noise is a lot less than my last one. The controls are really convenient for quick cooking. A button for melting or softening button to 1 lbs. button for defrosting. The front is anti smudge. It came quick. I did buy on sale, but it was worth the money. It is quiet, convenient buttons, hardly any cleaning, and looks great. I would buy again.
Published: August 13, 2019
Marta M. Brown
Source: amazon.com

Note: Durability rated 5/5 on projected use over time. I'll update the
Note: Durability rated 5/5 on projected use over time. I'll update the review as necessary should this projection change appreciably. Good unit for the money. Powerful, useful presets, color makes it well-suited for most any placement in any kitchen. Even the clock was easy to set! ;-) Only two gripes, albeit minor. First, delivery kept the unit on the first day because they weren't comfortable leaving it outside. That's understandable, but providing an option to leave it would have been nice, since not everyone can be at home during normal delivery hours. To be clear, the gripe here is not that the delivery company kept the item overnight, it's that there was no option for the delivery company to leave it at the house. Gripe #2: the buttons are loud. Not distractingly so, but I would have preferred a more subdued, muted level of noise. Overall, satisfied with the purchase. At this point, would order this unit again... many years down the road. ;-)
Published: November 5, 2018
Peter Carrier
Source: amazon.com

So far so good! The kitchen is going to be renovated late this summer, and
So far so good! The kitchen is going to be renovated late this summer, and our old GE microwave which came with the house needed to be replaced to match. (The GE was working well and adequate, but was a bit of a fashion faux pas in any environment.) After reading lots of reviews for mid-sized microwaves, I decided to try this Toshiba. The kitchen will feature a black sink and black commercial faucet, with light gray countertop with dark veins/patterns, the floor will be dark grey tile. So the colour and exterior styling of this Toshiba fits right in. More important are a couple of things I’ve noticed in the short period I’ve had this unit. First, it is quiet! At least it is much quieter than the old GE. Second, the various settings seem to work well. I used the sensor reheat yesterday evening for the first time and it worked very well. I have yet to try any of the other auto settings; I’ve never used many such settings in the past. But this little guy has me intrigued for some strange reason. One or more reviews stated they could not get the beeper turned off even when following the instructions. It DOES work; just press the #8 on the keypad long enough. The trick is to hold the key press long enough. The manual states 3 seconds, but I think it is more like 4 seconds. This setting will change back to default if the power goes out and the unit resets, but that’s to be expected. All-in-all I’m very happy so far. As I get more practice with it I will try to remember to update this review. I’ve always been happy with most Toshiba products, including a 39” LED television that I purchased from Amazon a few years ago.
Published: June 16, 2018
Earl Dunbar
Source: amazon.com

Simple and effective. I love the door handle as apposed to the press button
Simple and effective. I love the door handle as apposed to the press button other brands have to open the door - it works a lot better.
Published: January 9, 2018
Pieter Lombard
Source: amazon.com

We moved into a new house with no range microwave so I was on the hunt for
We moved into a new house with no range microwave so I was on the hunt for a countertop. This one fit the bill and after a month of use, we are pretty happy with it. I was looking for: - Quick 30 button that didn’t need an addition button press to start - Quick minute button, bonus for 2-6 quick minute buttons - Handle to open the door - >=1000w power - Bonus points for small footprint due to limited counter space The only thing that really missed the mark was the footprint, but I did a lot of comparisons, and this one’s footprint is pretty much average for a microwave of this capacity. We didn’t need a fancy machine with all the bells and whistles. We really just needed something that would reheat leftovers so we don’t use the presets or other functions on this microwave. I did try the butter melt/soften function once and the butter boiled over, so I don’t think they really work all that well anyway. Overall, we are very happy with this microwave! A countertop microwave with a handle instead of a button for door operation really narrows down the choices, and I’m really happy we chose this one!
Published: May 28, 2018
Whitney
Source: amazon.com

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